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Re: Binding an objects "Enabled" to a button in IB
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Re: Binding an objects "Enabled" to a button in IB


  • Subject: Re: Binding an objects "Enabled" to a button in IB
  • From: email@hidden
  • Date: Tue, 31 Aug 2010 12:38:54 +0200 (CEST)
  • Importance: Normal

Hi Jerry and Joanna,

Thank you both for your comments on this.

Joanna: do you mean that by applying Jerry's method, we put parts of the
Controller's duty into the View?

/Mikael

> Hi Jerry
>
>>> Le 30 août 2010 à 13:26, email@hidden a écrit :
>>>
>>>> Can this binding be done … completely in the nib file (in IB)?
>>
>> The answer is yes because the controller Joanna refers to may be an
>> NSObjectController from the Library in IB.
>>
>> Because the "Bind to" popup in Interface Builder's Inspector ▸
>> Bindings only shows the "controller" objects to which controls are
>> typically bound, you cannot bind the Enabled binding of a text field
>> directly to, say, the state of a button in Interface Builder.  But
>> sometimes Apple leaves little hooks for "the other 20%" of us to do it
>> Our Way.  Drop in an NSObjectController, and bind the text field's
>> Enabled binding instead to the object controller with Controller Key =
>> "content".  Then, bind the Value binding of the button to the same
>> object controller with same Controller Key = "content".  Voila.
>
> Eeeuuuwww!!!
>
> It might work but is it really code as we know it Jim? ;-)
>
> This kind of application design is too reminiscent of environments like
> Delphi and VS, where people are encouraged to write all their business
> logic in the form class. At least, in Cocoa, we have the encouragement to
> use controller classes.
>
> Surely, if you already have a controller for the form, it's not really
> that much effort to add an outlet property to the class and bind to that.
>
> Joanna
>
> --
> Joanna Carter
> Carter Consulting

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  • Follow-Ups:
    • Re: Binding an objects "Enabled" to a button in IB
      • From: Joanna Carter <email@hidden>
References: 
 >Binding an objects "Enabled" to a button in IB (From: email@hidden)
 >Re: Binding an objects "Enabled" to a button in IB (From: Joanna Carter <email@hidden>)
 >Re: Binding an objects "Enabled" to a button in IB (From: Jerry Krinock <email@hidden>)
 >Re: Binding an objects "Enabled" to a button in IB (From: Joanna Carter <email@hidden>)

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